Using the object modeling system for hydrological model development and application

Abstract

Abstract. State of the art challenges in sustainable management of water resources have created demand for integrated, flexible and easy to use hydrological models which are able to simulate the quantitative and qualitative aspects of the hydrological cycle with a sufficient degree of certainty. Existing models which have been de-veloped to fit these needs are often constrained to specific scales or purposes and thus can not be easily adapted to meet different challenges. As a solution for flexible and modularised model development and application, the Object Modeling System (OMS) has been developed in a joint approach by the USDA-ARS, GPSRU (Fort Collins, CO, USA), USGS (Denver, CO, USA), and the FSU (Jena, Germany). The OMS provides a modern modelling framework which allows the implementation of single process components to be compiled and applied as custom tailored model assemblies. This paper describes basic principles of the OMS and its main components and explains in more detail how the problems during coupling of models or model components are solved inside the system. It highlights the integration of different spatial and temporal scales by their representation as spatial modelling entities embedded into time compound components. As an exam-ple the implementation of the hydrological model J2000 is discussed.

A lightweight framework for rapid development of object-based hydrological model engines

“…The Object Modeling System (Kralisch et al, 2005;David et al, 2010David et al, , 2013 exploited by, e. g., Formetta et al (2014) provides another typical example of a modeling framework. Like many other frameworks (and particular model engines), it is based on the paradigms of object-orientated design outlined in Zeigler (1990).…”

An object-oriented hydrologic model for humid, shallow water-table environments

“…There have recently been a few applications of OOD in hydrologic models (e.g. Band et al, 2000;Kralisch et al, 2005;Lal et al, 2005). Wang et al (2005) and Kiker et al (2006) give detailed discussions of the systematic implementation of OOD in watershed model design.…”

Models as web services using the Open Geospatial Consortium (OGC) Web Processing Service (WPS) standard

“…In the latter case, models are linked to others within a workflow and data are passed between models at simulation run time. This approach where models are written in a modular way and utilize object oriented programming, enabling them to remain as flexible, extensible, and reusable as possible (Argent et al, 2006), is gaining momentum within the earth science community (Syvitski et al, 2004;Hill et al, 2004;Kralisch et al, 2005;Castronova et al, 2013).…”